Valve-adjusting means for internal-combustion engines



Dec. 28 1926.

F. C. LANGE VALVE ADJUSTING MEANS FOR INTERNAL COMBUSTION ENGINES U Filed Dec. 1. 1923 ATTORNEY WITNESSES Patented Dec. 28, 1926.

FREDERICK C. LANGE,

0F CASPER, XVYOMING.

VALVE-ADJUSTING MEANS INTERNAL COMBUSTIGN ENGINES.

Application filed December The object of my said invention is the provision of an extremely simple, inexpensive and eiiicient means for the adequate taking up of lost motion between a valve stem and a tappet that is not adjustable, and also adapted to afford a seat for the outer end of the spring "for closing a valve such as used in internal combustion engines and for holding the valve to its seat.

To the attainment of the foregoing, the invention consists in the improvement as hereinafter described and definitely claimed.

In the accompanying drawings, forming part or this specification Figure 1 is a view showing in elevation a valve and valve spring and my novel simple and efiicient adjusting means.

Figure 2 is a diametrical section through the adjusting means.

Figure 3 is a detail view showing the aperture in the stem of the valve.

Similar numerals of reference designate corresponding parts in all oi the views of the drawings.

The valve body is designated by 1 and its stem by 2 and in the preferred embodiment oi my invention the stem 2 is provided at 3 with an aperture, designed to receive a pin which is preferably inserted while adjusting the valve with a view to preventing the valve turning. There is, however, but little liability oi the valveturning incident to adjustment because of the tension of the spring operating to hold the valve to its seat.

In accordance with my invention the valve stem 2 is provided at its outer end portion with a thread, preferably a S. A. E. thread, whici extends through about one inch of the length of the stem. On the outer end of the st m is mounted a cap 4 for en gage-meat with a tappet, said tappetbeing designated by 4* in Figure 1, and on the threaded portion of the stem at the inner side or" the cap l is mounted my novel adjusting member 5, the said member 5 being movable about the stem and being adapted to be positioned at difierent points in the length of the stem and to bear at its inner side against and afford a seat for the outer end of the valve spring 6. The said member 5 is made up of a disk 7 the periphery of which is knurled as indicated by 8, together with a reduced projection 9 at the inner side of the disk 7 and adapted to snugly occupy the outer convolution of the spring 6, and a 1, 1923. serial No. 678,001;

portion 10 at the outer side of the disk 7 and adapted for the application of a wrench or the like when the member 5 cannot be properly adjusted by hand.

My invention has been reduced to actual practice and successfully operated, and the said operation has demonstrated that my novel adjusting means will keep the valve stem straight in its guide on account of the outer end of the valve spring beingopposed to a flat surface at the inner side of the disk 7 comprised in the member This efiicient guiding of the valve stem eliminates wear of the same and also wear oi the valve guide with the result that leakage around the valve stem is precluded and power is saved. My improvement also permits of adjustment from zero to of an inch between the valve and the tappet for opening the valve agains the action of the spring, and hence the adjusting means operates to save power.

Maniiestly my improvement is susceptible of being expeditiously and easily installed in motors at present in use, and the improvement can be made in various sizes to fit different sizes of valve stems and springs, and while 1 have specifically described the charactor of the thread on the valve stem it is manifest that any appropriate thread can be employed without involving departure from the scope of my claimed invention.

When the tappets of an internal combustion engine are not constructed for adjust.- ment, adequate adjustment is afforded by my novel means.

I have entered into a detailed description of the construction and relative arrangement of the parts embraced in the present and preferred embodiment of my invention in order to impart -lull, clear and exact undexetanding of the said embodiment. I do not desire, however, to be understood confining myself to the specific c0nstruction and relative arrangement of parts in asinuch as in the future practice of the invention various changes and modifications may be made such as fall within the scope oi my invention as defined in my appended claim.

Having described my invention, what I claim and desire to secure by Letters-Patent, is

The combination of an internal combustion valve body and stem thereon, the outer portion of said stem being threaded and having an aperture therethrough adjacent the threaded portion, a coiled spring surrounding the stem, an adjusting member threaded and engaging the threaded portion of the ste n, the said adjusting member being made up of a disk having a narrow peripheral portion with aflat inner side for seating the outer end of the spring, a reduced projection at its inner side adapted to snugly occupy the outer convolution of the spring, and an angular portion at its outer side 10 adapted for the application of a Wrench, and :1 cap threaded on the end of the stem and closed at the outer end and having a flat surface at said end.

In testimony whereof I ztfiix my signature.

FREDERICK c. 'LANGE. 

